Thank you for the time you put into replying to my query!
So it looks as though my worst fears are correct: Endnote has limited functionality with regards to date formats, at least compared with Procite (ie it can only process dates in a single, numerical format).
As for working around this flaw - and I apologize for asking for even more help, you’ve been very generous - but how exactly does one convert 02/16/1859 to 1859/02/16? Or rather, how does one do it 9000 times without going one by one? It was easy enough to use the Change Text command to change January to 01 and so forth, but as for rearranging the order from day/month/year to year/month/day - I don’t know how you would do that using Change Text. Is there a different command I should use?
Thank you, and anyone else who can help.